java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:46:25,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:46:25,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:46:25,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:46:25,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:46:25,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:46:25,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:46:25,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:46:25,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:46:25,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:46:25,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:46:25,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:46:25,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:46:25,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:46:25,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:46:25,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:46:25,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:46:25,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:46:25,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:46:25,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:46:25,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:46:25,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:46:25,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:46:25,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:46:25,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:46:25,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:46:25,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:46:25,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:46:25,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:46:25,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:46:25,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:46:25,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:46:25,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:46:25,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:46:25,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:46:25,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:46:25,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:46:25,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:46:25,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:46:25,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:46:25,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:46:25,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:46:25,530 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:46:25,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:46:25,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:46:25,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:46:25,534 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:46:25,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:46:25,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:46:25,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:46:25,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:46:25,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:46:25,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:46:25,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:46:25,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:46:25,536 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:46:25,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:46:25,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:46:25,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:46:25,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:46:25,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:46:25,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:46:25,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:46:25,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:25,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:46:25,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:46:25,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:46:25,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:46:25,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:46:25,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:46:25,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:46:25,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:46:25,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:46:25,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:46:25,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:46:25,838 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:46:25,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:46:25,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd32d1b3/13b614b7f83640c48e8025e5ea96f719/FLAGa12576190 [2019-10-13 19:46:26,463 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:46:26,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:46:26,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd32d1b3/13b614b7f83640c48e8025e5ea96f719/FLAGa12576190 [2019-10-13 19:46:26,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd32d1b3/13b614b7f83640c48e8025e5ea96f719 [2019-10-13 19:46:26,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:46:26,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:46:26,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:26,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:46:26,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:46:26,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:26" (1/1) ... [2019-10-13 19:46:26,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19921db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:26, skipping insertion in model container [2019-10-13 19:46:26,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:26" (1/1) ... [2019-10-13 19:46:26,675 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:46:26,761 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:46:27,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:27,411 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:46:27,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:27,873 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:46:27,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27 WrapperNode [2019-10-13 19:46:27,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:27,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:46:27,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:46:27,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:46:27,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... [2019-10-13 19:46:27,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:46:27,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:46:27,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:46:27,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:46:27,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:46:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:46:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:46:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:46:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:46:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:46:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:46:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:46:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:46:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:46:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:46:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:46:28,055 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:46:28,056 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:46:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:46:28,057 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:46:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:46:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:46:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:46:29,840 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:46:29,841 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:46:29,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:29 BoogieIcfgContainer [2019-10-13 19:46:29,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:46:29,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:46:29,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:46:29,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:46:29,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:26" (1/3) ... [2019-10-13 19:46:29,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b873ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:29, skipping insertion in model container [2019-10-13 19:46:29,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:27" (2/3) ... [2019-10-13 19:46:29,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b873ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:29, skipping insertion in model container [2019-10-13 19:46:29,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:29" (3/3) ... [2019-10-13 19:46:29,860 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:46:29,870 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:46:29,882 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 19:46:29,893 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 19:46:29,937 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:46:29,937 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:46:29,937 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:46:29,938 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:46:29,938 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:46:29,938 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:46:29,938 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:46:29,939 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:46:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2019-10-13 19:46:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:30,015 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:30,016 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:30,019 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 257827157, now seen corresponding path program 1 times [2019-10-13 19:46:30,033 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:30,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559253264] [2019-10-13 19:46:30,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:30,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:30,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:31,024 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:31,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559253264] [2019-10-13 19:46:31,081 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:31,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:31,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045813435] [2019-10-13 19:46:31,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:31,087 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:31,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:31,103 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 4 states. [2019-10-13 19:46:31,450 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:46:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:33,995 INFO L93 Difference]: Finished difference Result 759 states and 1331 transitions. [2019-10-13 19:46:33,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:33,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-13 19:46:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:34,017 INFO L225 Difference]: With dead ends: 759 [2019-10-13 19:46:34,017 INFO L226 Difference]: Without dead ends: 590 [2019-10-13 19:46:34,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-13 19:46:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2019-10-13 19:46:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-13 19:46:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 857 transitions. [2019-10-13 19:46:34,123 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 857 transitions. Word has length 151 [2019-10-13 19:46:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:34,126 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 857 transitions. [2019-10-13 19:46:34,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 857 transitions. [2019-10-13 19:46:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:34,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:34,135 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:34,135 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:34,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:34,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1201169525, now seen corresponding path program 1 times [2019-10-13 19:46:34,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:34,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000400087] [2019-10-13 19:46:34,137 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:34,137 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:34,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:34,615 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:34,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000400087] [2019-10-13 19:46:34,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:34,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:34,658 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115550347] [2019-10-13 19:46:34,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:34,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:34,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:34,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:34,660 INFO L87 Difference]: Start difference. First operand 588 states and 857 transitions. Second operand 4 states. [2019-10-13 19:46:34,932 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:46:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:36,940 INFO L93 Difference]: Finished difference Result 1187 states and 1790 transitions. [2019-10-13 19:46:36,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:36,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-13 19:46:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:36,952 INFO L225 Difference]: With dead ends: 1187 [2019-10-13 19:46:36,952 INFO L226 Difference]: Without dead ends: 964 [2019-10-13 19:46:36,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-10-13 19:46:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 962. [2019-10-13 19:46:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2019-10-13 19:46:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1427 transitions. [2019-10-13 19:46:37,011 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1427 transitions. Word has length 151 [2019-10-13 19:46:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:37,012 INFO L462 AbstractCegarLoop]: Abstraction has 962 states and 1427 transitions. [2019-10-13 19:46:37,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1427 transitions. [2019-10-13 19:46:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:37,015 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:37,015 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:37,015 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:37,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1200830901, now seen corresponding path program 1 times [2019-10-13 19:46:37,016 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:37,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321764013] [2019-10-13 19:46:37,017 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:37,017 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:37,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:37,643 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:37,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321764013] [2019-10-13 19:46:37,686 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:37,687 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:37,687 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847914334] [2019-10-13 19:46:37,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:37,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:37,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:37,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:37,689 INFO L87 Difference]: Start difference. First operand 962 states and 1427 transitions. Second operand 5 states. [2019-10-13 19:46:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:40,518 INFO L93 Difference]: Finished difference Result 2828 states and 4188 transitions. [2019-10-13 19:46:40,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:40,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-13 19:46:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:40,530 INFO L225 Difference]: With dead ends: 2828 [2019-10-13 19:46:40,531 INFO L226 Difference]: Without dead ends: 1879 [2019-10-13 19:46:40,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:46:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2019-10-13 19:46:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1837. [2019-10-13 19:46:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1837 states. [2019-10-13 19:46:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2717 transitions. [2019-10-13 19:46:40,613 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2717 transitions. Word has length 151 [2019-10-13 19:46:40,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:40,614 INFO L462 AbstractCegarLoop]: Abstraction has 1837 states and 2717 transitions. [2019-10-13 19:46:40,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2717 transitions. [2019-10-13 19:46:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:46:40,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:40,617 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:40,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:40,618 INFO L82 PathProgramCache]: Analyzing trace with hash -958267271, now seen corresponding path program 1 times [2019-10-13 19:46:40,619 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:40,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594565898] [2019-10-13 19:46:40,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:40,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:40,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:40,997 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:41,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594565898] [2019-10-13 19:46:41,049 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:41,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:41,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404293929] [2019-10-13 19:46:41,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:41,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:41,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:41,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:41,051 INFO L87 Difference]: Start difference. First operand 1837 states and 2717 transitions. Second operand 4 states. [2019-10-13 19:46:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:44,224 INFO L93 Difference]: Finished difference Result 5465 states and 8081 transitions. [2019-10-13 19:46:44,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:44,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-13 19:46:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:44,243 INFO L225 Difference]: With dead ends: 5465 [2019-10-13 19:46:44,243 INFO L226 Difference]: Without dead ends: 3660 [2019-10-13 19:46:44,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2019-10-13 19:46:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 1839. [2019-10-13 19:46:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2019-10-13 19:46:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2719 transitions. [2019-10-13 19:46:44,340 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2719 transitions. Word has length 152 [2019-10-13 19:46:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:44,340 INFO L462 AbstractCegarLoop]: Abstraction has 1839 states and 2719 transitions. [2019-10-13 19:46:44,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2719 transitions. [2019-10-13 19:46:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:46:44,344 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:44,345 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:44,345 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1744211523, now seen corresponding path program 1 times [2019-10-13 19:46:44,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:44,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701991734] [2019-10-13 19:46:44,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:44,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:44,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:44,813 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:44,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701991734] [2019-10-13 19:46:44,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:44,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:44,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247961250] [2019-10-13 19:46:44,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:44,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:44,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:44,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:44,892 INFO L87 Difference]: Start difference. First operand 1839 states and 2719 transitions. Second operand 4 states. [2019-10-13 19:46:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:47,909 INFO L93 Difference]: Finished difference Result 5196 states and 7684 transitions. [2019-10-13 19:46:47,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:47,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-13 19:46:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:47,927 INFO L225 Difference]: With dead ends: 5196 [2019-10-13 19:46:47,927 INFO L226 Difference]: Without dead ends: 3554 [2019-10-13 19:46:47,931 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2019-10-13 19:46:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3512. [2019-10-13 19:46:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3512 states. [2019-10-13 19:46:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 5152 transitions. [2019-10-13 19:46:48,062 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 5152 transitions. Word has length 153 [2019-10-13 19:46:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:48,062 INFO L462 AbstractCegarLoop]: Abstraction has 3512 states and 5152 transitions. [2019-10-13 19:46:48,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 5152 transitions. [2019-10-13 19:46:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 19:46:48,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:48,068 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:48,068 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:48,069 INFO L82 PathProgramCache]: Analyzing trace with hash 294713414, now seen corresponding path program 1 times [2019-10-13 19:46:48,069 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:48,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245385393] [2019-10-13 19:46:48,069 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:48,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:48,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:48,477 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:48,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245385393] [2019-10-13 19:46:48,517 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:48,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:48,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333394393] [2019-10-13 19:46:48,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:48,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:48,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:48,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:48,519 INFO L87 Difference]: Start difference. First operand 3512 states and 5152 transitions. Second operand 5 states. [2019-10-13 19:46:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:50,090 INFO L93 Difference]: Finished difference Result 6017 states and 8836 transitions. [2019-10-13 19:46:50,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:50,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-13 19:46:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:50,103 INFO L225 Difference]: With dead ends: 6017 [2019-10-13 19:46:50,103 INFO L226 Difference]: Without dead ends: 2690 [2019-10-13 19:46:50,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:46:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2019-10-13 19:46:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2690. [2019-10-13 19:46:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2690 states. [2019-10-13 19:46:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3933 transitions. [2019-10-13 19:46:50,210 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3933 transitions. Word has length 153 [2019-10-13 19:46:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:50,210 INFO L462 AbstractCegarLoop]: Abstraction has 2690 states and 3933 transitions. [2019-10-13 19:46:50,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3933 transitions. [2019-10-13 19:46:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 19:46:50,215 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:50,215 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:50,215 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2083946363, now seen corresponding path program 1 times [2019-10-13 19:46:50,216 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:50,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342996704] [2019-10-13 19:46:50,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:50,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:50,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,563 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:50,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342996704] [2019-10-13 19:46:50,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:50,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:50,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681036788] [2019-10-13 19:46:50,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:50,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:50,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:50,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:50,616 INFO L87 Difference]: Start difference. First operand 2690 states and 3933 transitions. Second operand 4 states. [2019-10-13 19:46:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:52,490 INFO L93 Difference]: Finished difference Result 6148 states and 9216 transitions. [2019-10-13 19:46:52,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:52,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-13 19:46:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:52,507 INFO L225 Difference]: With dead ends: 6148 [2019-10-13 19:46:52,507 INFO L226 Difference]: Without dead ends: 3644 [2019-10-13 19:46:52,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2019-10-13 19:46:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3558. [2019-10-13 19:46:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2019-10-13 19:46:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5350 transitions. [2019-10-13 19:46:52,651 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5350 transitions. Word has length 154 [2019-10-13 19:46:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:52,651 INFO L462 AbstractCegarLoop]: Abstraction has 3558 states and 5350 transitions. [2019-10-13 19:46:52,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5350 transitions. [2019-10-13 19:46:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:46:52,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:52,656 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:52,657 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash -564593784, now seen corresponding path program 1 times [2019-10-13 19:46:52,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:52,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705316657] [2019-10-13 19:46:52,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:52,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:52,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:53,191 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:53,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705316657] [2019-10-13 19:46:53,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:53,313 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:46:53,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851687086] [2019-10-13 19:46:53,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:46:53,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:53,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:46:53,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:46:53,317 INFO L87 Difference]: Start difference. First operand 3558 states and 5350 transitions. Second operand 14 states. [2019-10-13 19:46:53,733 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2019-10-13 19:46:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:59,804 INFO L93 Difference]: Finished difference Result 18347 states and 28459 transitions. [2019-10-13 19:46:59,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-13 19:46:59,805 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 157 [2019-10-13 19:46:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:59,863 INFO L225 Difference]: With dead ends: 18347 [2019-10-13 19:46:59,863 INFO L226 Difference]: Without dead ends: 15008 [2019-10-13 19:46:59,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:46:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15008 states. [2019-10-13 19:47:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15008 to 9082. [2019-10-13 19:47:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9082 states. [2019-10-13 19:47:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9082 states to 9082 states and 13835 transitions. [2019-10-13 19:47:00,454 INFO L78 Accepts]: Start accepts. Automaton has 9082 states and 13835 transitions. Word has length 157 [2019-10-13 19:47:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:47:00,454 INFO L462 AbstractCegarLoop]: Abstraction has 9082 states and 13835 transitions. [2019-10-13 19:47:00,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:47:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9082 states and 13835 transitions. [2019-10-13 19:47:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:47:00,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:47:00,462 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:47:00,462 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:47:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:47:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash -253521854, now seen corresponding path program 1 times [2019-10-13 19:47:00,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:47:00,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28004195] [2019-10-13 19:47:00,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:00,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:00,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:47:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:00,904 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:47:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:47:00,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28004195] [2019-10-13 19:47:00,985 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:47:00,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:47:00,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795009275] [2019-10-13 19:47:00,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:47:00,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:47:00,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:47:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:47:00,989 INFO L87 Difference]: Start difference. First operand 9082 states and 13835 transitions. Second operand 10 states. [2019-10-13 19:47:01,290 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 205